Linux

Debian 9 — cyrus-imapd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — cyrus-imapd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 April 2020 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-11356 CVE-2019-19783 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Arch Linux — hostapd — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — hostapd — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201710-23 Related CVEs: CVE-2017-13088 CVE-2017-13087 CVE-2017-13082 CVE-2017-13081 CVE-2017-13080 CVE-2017-13079 CVE-2017-13078 CVE-2017-13077  +3 more Upstream summary: Type: man-in-the-middle. Status: Fixed. Affected: 2.6-5. Fixed in: 2.6-6. Group: AVG-448. Table of contents Symptom […]

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Common Problems 121544

Debian 9 – systemd service remains in activating state after reboot

🟠 High   ⏱ 5–30 min  Last verified: 17 April 2020 Affected versions: Debian 9 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Common Problems 121202

Debian 10 – rsync backup job fails on permissions, ACLs, or xattrs

🟠 High   ⏱ 5–30 min  Last verified: 17 April 2020 Affected versions: Debian 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Alpine Linux edge — sdl2_image — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — sdl2_image — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.0.5-r1 📖 ~4 min read  •  Source: Alpine secdb entry — sdl2_image 2.0.5-r1 Related CVEs: CVE-2019-13616 CVE-2017-12122 CVE-2017-14440 CVE-2017-14441 CVE-2017-14442 CVE-2017-14448 CVE-2017-14449 CVE-2017-14450 Upstream summary: Alpine community repository for vedge ships sdl2_image 2.0.5-r1 which addresses CVE-2019-13616. […]

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Common Problems 118556

Ubuntu 16.04 LTS – systemd service fails to start at boot

🟠 High   ⏱ 5–30 min  Last verified: 17 April 2020 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention […]

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Common Problems 118119

Ubuntu 18.04 LTS Systemd Service Fails with Start Limit Hit

🟡 Medium   ⏱ 5–30 min  Last verified: 17 April 2020 Affected versions: 18.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]

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Ubuntu 14.04 — ruby1.9.1 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — ruby1.9.1 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 April 2020 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3945-1 Related CVEs: CVE-2019-8320 CVE-2019-8321 CVE-2019-8322 CVE-2019-8323 CVE-2019-8324 CVE-2019-8325 CVE-2018-16395 CVE-2018-16396  +12 more Upstream summary: It was discovered that Ruby incorrectly handled certain RubyGems. An attacker could possibly use this […]

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Gentoo Linux — mail-filter/spamassassin — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — mail-filter/spamassassin — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202105-26 Related CVEs: CVE-2020-1946 Upstream summary: It was discovered that SpamAssassin incorrectly handled certain CF files. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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